Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doc chieu » doc hieu, doi chieu, toc thieu
hanh dung » thanh dung, anh dung, hanh dong
dung dan » dung san, tung dan, huong dan
dan dung » van dung, tin dung, ap dung
vung dat » vung va
dung dat » dung va, dung tai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu sach - hanh dung dan dung ((vung dat) or (dung dat)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu sach - hanh dung dan dung ((vung dat) OR (dung dat)) phan tu.
• Adding a wildcard symbol may retrieve word variants: doc chieu sach - hanh dung dan dung ((vung dat) or (dung dat)) phan tu*.